Screw

ABSTRACT

A fastener including a chisel point that pre-bores a hole in a work piece to prevent damage to the work piece as the fastener advances. The fastener can include a head, a shaft and a chisel brake point formed at an end of the shaft. The chisel brake point can include first and second opposing inclined surfaces disposed at an angle of about 80° to about 150° relative to one another. A thread can begin adjacent the chisel brake point and form an extension of an inclined surface and/or a chisel edge. The chisel brake point can scrape material from a work piece while pre-boring a hole. The material can be transferred to the thread, and subsequently fed up the thread, out of the pre-bored hole. The chisel brake point can also selectively retard advancement of the fastener into the work piece. Methods of installing the fastener also are provided.

FIG. 1 is a side view of the screw embodying the new design;

FIG. 2 is a second side view thereof;

FIG. 3 is a third side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a point end view thereof; and,

FIG. 6 is a close up perspective view thereof.

FIGS. 1-6 show features of a screw in phantom lines. These features are shown for environmental purposes and do not form any part of the claimed design. The phantom lines immediately adjacent the solid-line portions of the design form the boundary of the design, with the phantom lines forming no part of the claimed design. 

CLAIM The ornamental design for screw, as shown and described. 